Accordingly, Pitt and his colleagues, instead of concentrating their activities on Flanders, prepared also to harass the coasts and colonies of France, and to withdraw part of the Duke of York's force for service in the Mediterranean or the West Indies. Instructions to this effect annoyed both the duke and Coburg. Most reluctantly did the latter consent to the divergence of the British towards Dunkirk; but, as he had already decided to spend the rest of the campaign in reducing the border fortresses, the division of forces had none of those appalling results which Alison and others have detected. The duke's corps, then, turned off to the right, and, after gaining some successes over bodies of the French, set about the siege of Dunkirk. If his siege train had arrived in time, the town would probably soon have surrendered. But now Carnot was able to utilize some of the forces raised in the _levee en masse_. By the beginning of September the French relieving army amounted to 45,000 men under General Houchard; while the Hessians and Hanoverians covering the siege operations did not exceed 9,000 men. These made a most obstinate and skilful defence in the village of Bambeke, and thereafter at Hondschoote; but the inequality of force was too great; and they were outflanked and driven back towards Furnes and Nieuport with the loss of 2,600 men (6th to 8th September). The garrison also attacked the besiegers and received much assistance from French gunboats moored near the shore. It was an unfortunate circumstance that a storm on 1st September had compelled a British frigate and a sloop to leave their moorings. Even so, the duke's force beat back their assailants into the town. But the defeat of the covering army at Hondschoote placed it between the French, the walls of Dunkirk, and the sea. Only by a speedy retreat could he save his men; and at midnight he drew off, leaving behind 32 siege guns and large quantities of stores.[233]